Electrographic apparatus and process for humidity stabilized development

ABSTRACT

an electrographic apparatus for applying a dry particulate developer mix comprising a triboelectric mixture of toner powder and carrier particles to an electrostatic image and a process for using the same are disclosed. The apparatus includes developing means for applying the developer mix to the electrostatic image and heat generating means associated with the developing means to directly heat the developer mix whereby the developer mix is electrically stabilized against relative humidity effects, particularly high relative humidity conditions.



